8.10.5.7 Pset_MaterialHygroscopic

PSET_MATERIALDRIVEN / IfcMaterial

Material HygroscopicA set of hygroscopic properties of materials.
Properties

PSD-XML

NameTypeDescription
UpperVaporResistanceFactor P_SINGLEVALUE / IfcPositiveRatioMeasure
Upper Vapor Resistance FactorThe vapor permeability relationship of air/material (typically value > 1), measured in high relative humidity (typically in 95/50 % RH).
LowerVaporResistanceFactor P_SINGLEVALUE / IfcPositiveRatioMeasure
Lower Vapor Resistance FactorThe vapor permeability relationship of air/material (typically value > 1), measured in low relative humidity (typically in 0/50 % RH).
IsothermalMoistureCapacity P_SINGLEVALUE / IfcIsothermalMoistureCapacityMeasure
Isothermal Moisture CapacityBased on water vapor density.
VaporPermeability P_SINGLEVALUE / IfcVaporPermeabilityMeasure
Vapor PermeabilityThe rate of water vapor transmission per unit area per unit of vapor pressure differential under test conditions.
MoistureDiffusivity P_SINGLEVALUE / IfcMoistureDiffusivityMeasure
Moisture DiffusivityMoisture diffusivity is a transport property that is frequently used in the hygrothermal analysis of building envelope components.

Link to this page  Link to this page